Prussian Blue Analogues as Anode Materials for Battery Applications: Complexities and Horizons

Area of Science:

• Materials Science
• Electrochemistry
• Inorganic Chemistry

Background:

• Prussian blue analogues (PBAs) are porous coordination materials with adaptable crystal structures, successful as cathode materials.
• PBAs with Fe or Co active sites show high redox potentials, with well-documented properties.
• PBAs with Cr or Mn active sites have lower redox potentials and are underexplored as anode materials.

Purpose of the Study:

• To analyze the challenges in producing and utilizing low-redox-potential PBAs as battery anode materials.
• To identify and propose future research directions for advancing PBA anode materials.
• To provide a comprehensive perspective on the understudied area of low-redox-potential PBAs.

Main Methods:

• Literature review and analysis of existing research on PBAs.
• Identification of challenges in synthesis and electrochemical application of low-redox-potential PBAs.
• Formulation of research questions and future outlook.

Main Results:

• PBAs with low redox potentials present significant challenges in production and application.
• The structural and electrochemical behavior of these materials is not well understood.
• There is a substantial gap in research concerning their use as anode materials.

Conclusions:

• Advancing the use of low-redox-potential PBAs in batteries requires addressing current production and application challenges.
• Further fundamental research is needed to understand their properties and unlock their potential as anode materials.
• This perspective highlights key areas for future investigation to propel the field forward.